粤北始兴鱼岔坑锡矿地球化学特征与找矿标志  

Geochemical characteristics and prospecting indicators of Yuchakeng tin deposit in Shixing county,northern Guangdong Province

作　　者：张福来[1] 朱祖良[1] 刘晋华[1] 

机构地区：[1]广东省地质勘查局七O六地质大队,广东韶关512028

出　　处：《华南地质与矿产》2005年第4期11-17,共7页Geology and Mineral Resources of South China

基　　金：中国地质调查局矿产资源调查评价项目(200110200024)

摘　　要：刘家山地区是以寒武-奥陶系为赋矿层位的有色金属矿集区。通过1∶20万水系沉积物测量,发现该区W,Sn,Pb,Zn等元素在粤北属低背景区。1∶5万化探圈定的沟子坑异常属低背景高富集异常,为W,Sn,B i,Cu,Pb,Zn,Ag,A s异常组合;经化探详查和相关的地质工作发现了鱼岔坑锡(多金属)矿,矿化受层间破碎带控制,赋矿层位为奥陶系。该锡矿的化探找矿标志是低背景高富集异常,其组份复杂,浓集中心明显,且具分带性。In the northern part of Guangdong province, Liujiashan area is the nonferrous metal enrichments occurred in Cambrian and Ordovician where such elements as tungsten, tin, lead and zinc are in low background values from 1/200,000 drainage sediment survey. However, Gouzikeng anomaly contoured in 1/50,000 geochemical prospecting has been found to be high enrichment anomaly under the above-mentioned background and is anomaly assemblage of tungsten, tin, bismuth, copper, lead, zinc, silver and arsenic. A tin （polymetallic） mineral deposit was discovered in Yuchakeng within Gouzikeng anomaly after detailed geochemical prospecting and relevant geological work, where tin mineralization is controlled by interlayer fracture zone and stannary is hosted in Ordovician. Relevant geochemical prospecting indicators for the tin mineral deposit include high enrichment anomaly within low value scenario, anomaly constituent complexity, distinct concentration centers and constituent zonality.

关 键 词：化探 锡(多金属矿) 地球化学找矿标志 粤北 

分 类 号：P618.44[天文地球—矿床学]